Discover the Benefits: Why Marigolds Are the Perfect Companion Plants for Your Garden


Marigolds, also known as Tagetes, are widely grown in gardens around the world. These beautiful flowers not only add a splash of vibrant color to your garden, but they also offer practical solutions to many common gardening problems. Whether you are looking to deter pests, attract pollinators, or improve the health of your plants, marigolds have got you covered.

One of the best reasons to use marigolds as companion plants is their ability to repel unwanted insects. Marigolds emit a strong scent that deters bugs such as aphids, whiteflies, and nematodes. Simply plant them around your vegetables, and watch these pests begone. Marigolds effectively control harmful insects without the need for harmful chemical sprays, making them a safe and eco-friendly option for pest control.

In addition to pest control, marigolds also provide a natural attractant for beneficial insects. Their bright, colorful flowers are irresistible to bees and butterflies, ensuring the pollination of your plants. By using marigolds, you can create a thriving ecosystem within your garden, where beneficial insects help control pests and promote the growth of your crops.

Marigolds are also compatible with a wide range of vegetables, making them a versatile companion plant. Whether you are growing tomatoes, broccoli, cabbages, or cucumbers, marigolds can be planted alongside them. They have been shown to improve the growth and overall health of these veggies, as well as attract pollinators and repel pests.

One of the great things about marigolds is that they are easy to grow and maintain. They can be started from seeds or transplanted as young seedlings. Marigolds prefer full sun, well-drained soil, and regular watering. They are a perfect addition to any garden, whether you are a beginner or an experienced gardener.

When it comes to planting marigolds, there are a few tips to keep in mind. It is best to plant them in between your vegetable rows or around the garden perimeter. This creates a barrier that deters pests from entering your crops. Additionally, you can plant marigolds near problem plants, such as beans or pumpkins, to help deter pests.

If you are looking to control nematodes in your garden, marigolds are the answer. These microscopic worms can wreak havoc on your crops, causing stunted growth and poor yields. However, marigolds have shown to be effective in controlling nematodes, as their roots release a substance that is toxic to them.

In conclusion, marigolds are not only beautiful flowers, but they are also a gardener’s best friend. Their pest-repelling properties, ability to attract beneficial insects, and compatibility with a variety of vegetables make them an ideal companion plant. So, why not give marigolds a try in your garden? Your plants will thank you.


1. Peter, G. The Flower Gardener’s Bible. Rodale, 2003.

2. Peter, G. The Vegetable Gardener’s Bible. Storey Publishing, 2009.

3. “Marigolds.” University of California Statewide Integrated Pest Management Program.

4. “Companion Planting With Marigolds.” National Gardening Association.

5. “5 Tips for Planting Marigolds in Your Garden.” The Old Farmer’s Almanac.

6. “African Marigolds.” Clemson Cooperative Extension.

7. “Marigold.” Encyclopaedia Britannica.

Do Marigolds Help or Hinder

Marigolds are commonly used by gardeners as companion plants for vegetables such as cabbages, broccoli, and potatoes. They have been used for centuries and are considered a must-have addition to any garden. But do marigolds truly help in controlling pests and benefiting neighboring plants, or do they hinder the growth of crops?

When it comes to repelling pests, marigolds have been found to be effective against nematodes, which are microscopic worms that can harm plants. The roots of marigold plants release chemicals that can reduce the populations of nematodes in the soil, providing an additional layer of control against these destructive pests. Marigolds have also been used as a natural repellent against other common pests such as aphids and whiteflies. Their strong scent would deter these insects from infesting the nearby crops.

However, marigolds are not a cure-all solution for pest control. While they can help reduce pest populations, they are not a standalone solution. It’s important to implement other pest control measures and practices, such as proper watering, mulching, and regular inspection of plants, to ensure the overall health of the garden.

Another benefit of marigolds as companion plants is their ability to attract beneficial insects. Their bright flowers and strong scent can attract pollinators such as bees and butterflies, which play a crucial role in the pollination of crops. By attracting these beneficial insects, marigolds can help improve the overall biodiversity of the garden and enhance the chances of successful crop production.

It’s worth noting that marigolds are not suitable companions for all vegetables. For example, they have been found to hinder the growth of beans and certain types of cabbage, such as Brussels sprouts. Marigolds require ample sunlight, and if planted too close to other plants that shade them, they may not thrive. Careful consideration should be given to proper spacing and sunlight sources when planting marigolds in vegetable beds.

In conclusion, marigolds can be a valuable addition to a garden when used strategically and in combination with other pest control methods. They have been proven to be effective against nematodes and can attract beneficial insects. However, their benefits may vary depending on the specific vegetable companion and garden conditions. It’s always important to do additional research and gather information from reliable sources before deciding to incorporate marigolds into your garden.


– Peter, D. (2018). The Organic Guide to Companion Planting: An Aztec-Inspired Approach to Dynamic Gardening.

7 Reasons To Use Marigolds As Companion Plants

Marigolds, commonly known as tagetes, are vibrant flowers that not only add color to your garden but also provide numerous benefits for your vegetables. Whether you are a beginner or an experienced gardener, using marigolds as companion plants can greatly enhance your gardening experience. Here are 7 reasons why you should consider using marigolds in your garden:

1. Pest control: Marigolds emit a strong scent that repels many pests, such as aphids, mosquitoes, and even rabbits. This natural pest control method can help protect your vegetables from damage and reduce the need for chemical sprays.

2. Attract beneficial insects: Marigolds attract beneficial insects like ladybugs, hoverflies, and lacewings, which are natural predators of pests. By planting marigolds near your vegetables, you can create a welcoming environment for these helpful insects and enhance the overall health of your garden.

3. Mould prevention: Certain types of marigolds, like calendula, are effective in preventing powdery mildew, a common fungal disease that affects many plants. By planting marigolds in your garden, you can reduce the risk of mildew and keep your vegetables healthy.

4. Weed control: Marigolds have an erecta or patula growth habit, which means they can spread out and cover the soil. This dense coverage helps suppress the growth of weeds, making it easier for you to maintain a weed-free garden.

5. Frost protection: Marigolds can act as a natural mulch, helping to insulate the soil and protect your vegetables from frost damage. By planting marigolds around cold-sensitive plants like broccoli, peas, and peppers, you can safeguard them during frosty nights.

6. Pollination: Marigolds are insect-pollinated plants that produce bright and attractive blooms. By attracting pollinators like bees and butterflies, marigolds can increase the chances of successful pollination for your vegetable plants, resulting in better fruit production.

7. Keeping smaller pests away: Marigolds release a chemical from their roots that bothers nematodes, which are microscopic worms that can attack the roots of your vegetables. By planting marigolds in the same area as your veggies, you can deter nematodes and protect your plants.

By taking advantage of these 7 benefits, you can make the most of using marigolds as companion plants in your garden. Whether it’s for pest control, weed suppression, or promoting pollination, marigolds can greatly benefit your vegetables. So, why wait? Start incorporating marigolds into your garden and see the positive impact they can have!


– Peter H. Deter, Pest management guides for organic gardening, 2003

– University of California Statewide Integrated Pest Management Program, Pest Note: Marigold

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Dr Heidi Parkes

By Dr Heidi Parkes

Senior Information Extension Officer QLD Dept of Agriculture & Fisheries.